CN1138976A - Multiple folded side barriers for improved leakage protection - Google Patents
Multiple folded side barriers for improved leakage protection Download PDFInfo
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- CN1138976A CN1138976A CN96107232A CN96107232A CN1138976A CN 1138976 A CN1138976 A CN 1138976A CN 96107232 A CN96107232 A CN 96107232A CN 96107232 A CN96107232 A CN 96107232A CN 1138976 A CN1138976 A CN 1138976A
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- China
- Prior art keywords
- side leakage
- leakage barriers
- absorbent article
- sanitary towel
- barriers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
- A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
- A61F13/4752—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier
- A61F13/4753—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier the barrier being not integral with the topsheet or backsheet
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
- A61F13/4942—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Packages (AREA)
Abstract
An absorbent product having fluid repellent leakage barriers is provided to reduce or prevent side leakage. The leakage barriers comprise folded structures which are attached longitudinally on the body-facing side of the absorbent product adjacent each lateral edge of the absorbent product and the distal ends of each leakage barrier are anchored to the absorbent product. When the absorbent product is flexed concavely along its longitudinal axis with respect to the body-facing side the leakage barriers at least partially open to form upstanding walls.
Description
The present invention relates to absorbent article, or rather, relate to a kind of disposable absorbent article that improves the side leakage barrier propterty.
Resemble absorbent articles such as sanitary towel, trousers liner, diaper and incontinent articles for use and all have liquid-permeable layer towards health one side, with liquid-tight layer towards coat one side, liquid-permeable layer can absorb excretory liquid, and the liquid-tight layer can prevent that the wearer of absorbent article from getting the coat of being worn wet and/or make dirty.These absorbent articles are microscler basically, that is, widthwise edge along between distance narrower than the distance of vertical go-and-retum, absorbent article can be placed comfily between wearer's two lower limbs thus and cover perineal position.
The common issue with that this goods exist is side leakage.A reason of side leakage is because occur skew when wearing goods and absorbent article is not aimed at.Eliminate or reduce and thisly out-of-alignmently repay examination and generally include and use bonding agent and or have the flank of bonding agent so that absorbent article is pasted on wearer's the underwear because of departing from.Yet if if the wearer does not aim at absorbent article underwear or absorbent article appearance slip when wearing, departing between the center line of so this absorbent article and the vaginal orifice will make the side leakage aggravation.
Be subjected to from the compression stress of wearer's thigh when absorbent article and occur also side leakage can occurring when transverse width that the crape pleat causes the absorption region between wearer's two lower limbs diminishes.Usually, thus pleating chance increases and has further reduced the transverse width of uptake zone but also can cause the external shape of absorbent article to change when absorbent article is drenched.The uptake zone this distortion occurs and transverse width reduces usually can cause side leakage.
In order to overcome these problems, many effort have been made in the hope of reducing existing leakage problem in the various absorbent articles.For example, be that the edge of absorbing material internal layer is folded into C shape flanging or multi-layer C shape flanging so that increase the thickness at absorbent article transverse edge place in known technology.Have this hemmed sanitary towel and be disclosed in U.S.3, in 699, No. 966 patents (Chapuis).Has C shape flanging or the hemmed diaper of multi-layer C shape is disclosed in U.S.3,744, No. 494 patents (Marsan), U.S.3,995, No. 640 patents (Schaar), U.S.4,040,423 and 4,041, No. 950 patent (Jones, Sr.), U.S.4,610, No. 679 patents (Matsushita) and U.S.3 are in 863, No. 637 patents (people such as Macdonald).Have the goods that the hemmed adult's gatism of C shape uses and be disclosed in U.S.3, in 068, No. 798 patent (Hokanson).Regrettably, when using these goods owing to and do not aim at and pleatingly still side leakage can occur.
Other method that overcomes side leakage comprises that thereby covering C shape flanging or multi-layer C shape flanging with impermeable barrier sheet sets up one more near the passage at center along the longitudinal axis of absorbent article.Diaper with this C of covering shape flanging structure is disclosed in U.S.5, and 263, No. 949 patents (people such as Karami) and U.S.3 are in 920, No. 017 patents (Karami).Because the passage in these diapers will deform when the crape pleat occurring, so still there is the side leakage problem.
Other technology relevant with reducing the absorbent article side leakage comprises projection or recessed road technology.U.S.4 for example discloses a kind of sanitary towel with concavo-convex road in 655, No. 759 patents people such as () Rmans-Hess, and concavo-convex road wherein is arranged on the longitudinal edge place near sanitary towel.This passage is upwards turned up the side of sanitary towel, prevents side leakage thus.Regrettably, pleating and special misalignment still can reduce the effectiveness of sanitary towel.
The known for example U.S.4 that uses in addition, 944, No. 735 patents (Mokry) and U.S.5 disclosedly in 074, No. 856 patent people such as () Coe reduce side leakage by the rising structure that an elastic strip forms is installed along the side of sanitary towel.US5, the content of 074, No. 856 patent disclosure comprises that use is made into the foam plastics shell of heaping wall and being covered by liner by mould, and has elastic strip between each layer of sanitary towel.Regrettably, elastic and molded plastics being used in the disposable absorbent article is the comparison costliness.Yet, because these rising structures only are arranged on the middle part of sanitary towel, so misalignment or slip or pleating all can causing side leakage occurs near the end of sanitary towel.
Therefore, need a kind of absorbent article that improve the side leakage protection, this absorbent article should be able to overcome because of misalignment, slip and the pleating problem that causes under the situation of not elasticity of demand spare or foamed materials.
The purpose of this invention is to provide a kind of novel absorbent article that improves the side leakage protection.
According to the present invention, the absorbent article that is provided comprises towards the liquid-tight layer of coat one side with towards the liquid-permeable layer of health one side, first transverse edge and second transverse edge, and be installed on first transverse edge in abutting connection with ground first foldable structure that forms first side leakage barriers and in abutting connection be installed in second foldable structure of formation second side leakage barriers on second transverse edge, like this, when absorbent article curves concave surface along its longitudinal axis with respect to the liquid-permeable layer towards health one side, first and second side leakage barriers will form axial wall.
The present invention also provides a kind of sanitary towel, and it comprises the liquid top flat, and the liquid-tight egative film places the absorbent cores between top flat and the egative film, and first and second sides, but also comprises:
First vertical shaping foldable structure of first side leakage barriers is installed and is formed in abutting connection with first transverse edge;
Second vertical shaping foldable structure of second side leakage barriers is installed and is formed in abutting connection with second transverse edge; With
When bending to concave surface with respect to the absorption side, sanitary towel forms first and second side leakage barriers of upstanding wall.
The present invention also provides a kind of manufacture method that has improved the absorbent article of anti-side leakage ability, and this method may further comprise the steps:
Form first side leakage barriers, this block piece comprises with the repeatedly folding flanging that constitutes of sheet material;
Be installed to first side leakage barriers on first transverse edge of absorbent article in abutting connection with ground;
Form second side leakage barriers, this block piece comprises with the repeatedly folding flanging that constitutes of sheet material; With
Second side leakage barriers is installed on second transverse edge of absorbent article in abutting connection with ground.
To more help to understand the present invention and make other numerous purposes of the present invention and advantage become more obvious by the detailed description of the present invention being carried out below in conjunction with accompanying drawing, wherein:
Fig. 1 represents according to the described perspective view with the sanitary towel of having improved the side leakage barrier propterty of one embodiment of the present of invention;
Fig. 2 represents according to the described perspective view with the absorbent article that has improved the side leakage barrier propterty of an alternative embodiment of the invention;
Fig. 3 represents to take from respectively the line A-A among the embodiment of sanitary towel of the present invention among Fig. 1 or the cutaway view at line B-B place;
Fig. 4 represents to take from respectively the line A-A among another embodiment of sanitary towel of the present invention among Fig. 2 or the cutaway view at line B-B place;
Sanitary towel in Fig. 5 presentation graphs 2 is with respect to the perspective view that is the concave bending in the sanitary towel towards health one side;
Sanitary towel in Fig. 6 presentation graphs 1 is with respect to the perspective view that is the concave bending in the sanitary towel towards health one side.
The present invention relates to a kind of novel absorbent article that improves the side leakage barrier propterty, more true Say that relate to so a kind of absorbent article, it comprises, towards the liquid-tight of coat one side with cutting Layer is towards the liquid-permeable layer of health one side with towards the coat layer and between the health layer Absorbent core, first and second transverse edges, the first fold stack structure, this foldable structure is by One side leakage barriers consists of, and first side leakage barriers is longitudinally extending shape and the edge is vertical To being installed in adjacently on first transverse edge, this block piece is near edge system on the absorbent article The product longitudinal axis curves the zone of concave surface in the vertical, thus make absorbent article basically with wear User's perineal region shape is consistent, second foldable structure, and this foldable structure is by second side The leakage block piece consists of, and second side leakage barriers has and is longitudinally extending shape and along vertical To being installed to adjacently on second transverse edge second transverse edge and first transverse edge Basically relatively in order to make at least part of not folding landform of first and second side leakage barriers Become upstanding wall, when absorbent article became concave surface with respect to a medial lateral bending, this was straight Wall extends in the gauffer of female genitalia side.
Side leakage barriers generally includes through the vertical typing that repeatedly is folded to form pleating Ruffle, these ruffles can be in basically near the area of distinguishing in the absorbent article section at least Divide not form foldedly upstanding wall, and these ruffles can stop absorbent article to be deposited effectively Side leakage or the liquid that the slows down transfer rate of passing side leakage barriers. With of the present invention Side leakage barriers is installed or is fixed to and makes pleating side leakage barriers structure on the absorbent article Surperficial higher than its installation of top layer, that is, and more close wearer's body surface, and And preferably at least with absorbent core the top the same high, preferably than the top of absorbent core Section is higher. That is to say that effectively side leakage barriers must be well with the wearer's Body contact rather than with the Surface Contact that block piece is installed, thus just along in the absorbent article Between the transverse sides of absorbent core formed one effective " liner " or " sealing Pad ". The method for optimizing that side leakage barriers is installed on the absorbent article normally makes it Be on the relative transverse sides with parallel relation to each other and vertically adjacently Be fixed on the transverse edge of absorbent article. Usually with side leakage barriers at absorbent article On the liquid-permeable layer of health one side, be installed on the absorbent article, or be installed to absorbent article Be with in the flank on the medial side, or be installed to the wing that absorbent article is with or flap In on the medial side and be installed near any two zones in the above-mentioned zone Scope in.
Can use any conventional art of flexible material being fixed or being bonded together to incite somebody to action Side leakage barriers is installed or is fixed on the absorbent article, and these technology include but not limited to glue Connect, heat seal technology, ultrasonic bonds technology, cold moulding process technology, mechanical crimp etc. The combination of technology and these technology. Mounting means both can be continuous also can certainly To be interrupted, so long as the longitudinal axis of the bottom along absorbent article is fixed to basically On the surface of absorbent article and play and stop liquid to pass that side leakage barriers shifts Effect gets final product. Preferably, adopt bonding or heat bonding continuously side leakage barriers Low layer is installed on the longitudinal axis of absorbent article adjacently. When absorbent article pleating because of it Or folding design and make absorbent article court because of its mode that is installed on the absorbent article When bending to concave surface to health, side leakage barriers of the present invention will open at least in part from And form upright wall. That is to say, importantly both tool of side leakage barriers of the present invention There is pleating design feature to have again special mounting means, wherein with side leakage barriers The bottom is fixed on the absorbent article in a zone of health one side, and this zone will The wearer that can be absorbed goods curves concave surface and will be with each pleat on the side leakage barriers At least one zone of layer, preferably with the far-end of each pleat on the side leakage barriers each other Bond together. The bottom of each side leakage barriers can be stopped at itself and side leakage Crease place between lower one deck of part with respect to the center of absorbent article inwardly or outwards Be fixed on the absorbent article. Preferably, adopt bonding agent the bottom adjacently with parallel Be installed on the longitudinal axis of absorbent article and the far-end of all layers in the pleat be fixed on Install on the absorbent article then together.
Can be by suitable sheet material be folded repeatedly shape by " Z-shaped folding " pattern alternately Become a plurality of pleats to roll over to consist of side leakage barriers of the present invention. Certainly, form pleat each layer it Between crease can be sharper also can be the fillet that relaxes, as long as one deck is relative Changing direction in its adjacent layer gets final product. In a preferred embodiment, with sheet material folding 1-6 times. In a preferred embodiment, sheet material is folded 2-4 time. Pleated sheet Material forms the technology of side leakage barriers can be before being installed to sanitary napkin with sheet material or it After carry out.
Itself is not subjected to restriction of the present invention the length of side leakage barriers, as long as this length is enough to The fluid drainage district of crossing in the absorbent article bow district gets final product. and usually, this length is extremely Length about 1/3 of the absorbent article of traditional, substantial symmetry less, and in fact With the absorbent article symmetry, this length preferably absorbent article length 1/3 and substantially first-class Between the scope of goods length. The absorbent article of unsymmetrical in prior art is Known, it is typically provided with elongated absorption portion to cover absorbent article wearer's stern Section. In these absorbent articles, the length of liquid obscures part is from approximately long less than absorbent article Degree 1/3 to the length that approximates greatly absorbent article. Preferably, the length of side leakage barriers The degree scope be from the whole length of absorbent article 1/3 to the length that is substantially equal to absorbent article Degree.
Side leakage barriers can by monolithic or made by the flexible material of laminated multi-layer, this A little materials can be converted into accordion structure and these materials preferably by hydrophobic, waterproof , ventilative material for example non-woven material, mesh plastic sheeting, foam and these The combination of material and consisting of. Although preferably use hydrophobic material, consist of side leakage and stop The material of part need not be confined to hydrophobic, waterproof or ventilative material, as long as used material Material can stop liquid to pass side leakage barriers on being fixed to absorbent article the time to advance basically Row shifts and gets final product. The instantiation of suitable material includes but not limited to, by for example gathering third The heat bonding nonwoven that the fibers such as alkene, polyester, nylon are made or by bicomponent fibre The heat bonding nonwoven of making can keep fibre structure when this bi-component is included in hot adhesion High-melting-point in poly-component with during hot adhesion, produce melting fibre fusion be in the same place Gather component outward with the low melting point that forms nethike embrane. Have this high-melting-point and low melting point polymerization The example of the bicomponent fibre of component is known and comprises respectively, for example, polyester and Polyethylene, polypropylene and polyethylene and height and low-melting point polyester. The heat that other is suitable Bonding nonwoven comprises spunbond, that melt and spray, hot calendering, heat embossing and hot blast Bonding nonwoven. Can use with chemical adhesive bonding hydrophobic, waterproof does not have yet Spin cloth, and the nonwoven of making by hydraulic pressure punching, Needling etc. Other is suitable Material comprises that for example those micropores of being made by nylon, polyester or polyurethanes are moulded Material film, netted and non-reticulated polymer foam and ventilative nonporous film, these materials can With but be not to be made by intrinsic elastomeric material wholly or in part, or have elasticity Part, these elastic components comprise such as elastica or elastic webbing etc., in order to make absorbent article shape Become concave surface or help the wall of side leakage barriers upright, can to these elastic components apply or Do not apply pre-tension. These elastic components can be fixed to one deck of side leakage barriers Or on the multilayer, this fixing can be finished with any traditional technology these technology bags Draw together bonding, heat bonding, ultrasonic bonds and stitching etc. In a preferred embodiment, using At least comprise an elastic component between each layer of hydrophobic, waterproof, gas permeable material lamination and And preferably this elastic component is laminated in the top layer of pleating side leakage barriers. Side leakage Block piece also can be the extension of the material on the absorbent article, and these materials comprise the system of absorption On the product on the material of health one side, absorbent article towards the material of coat one side, Or the assembly of this bi-material.
If side leakage barriers of the present invention is through the laminated multi-layer structure with above-mentioned flexible sheet material Become, so this multilayer layer casting die can comprise five layers, preferably is less than four layers. Obtain the multilayer layer casting die make things convenient for approach be flexible sheet material itself is folded at least one times or Repeatedly; Then the multilayer layer compressing tablet is converted into pleating side leakage barriers. Form multilayer layer The alternate manner of laminated structure is known, comprises such as technology such as stratification, laminations.
Obviously, when using the sheet material of laminated multi-layer, every one deck can with identical or Different sheet materials consists of. Like this, can be with absorbing material and hydrophobic waterproof material one foldover Build up the side leakage barriers that serves as a contrast for consisting of interior absorption, thereby consisting of the outside with hydrophobic material Can absorb side leakage by absorbing lining during the liquid obscures part. At a conversion embodiment In, side leakage barriers can comprise the multilayer tablet with suction and hydrophobic material, with multilayer Sheet is folding to make it to form pleating structure, and multilayer tablet is being installed on the absorbent article towards body One side of body and when sanitary napkin with respect to when health one side forms concave surface bended, beat The structure of pleat can be opened at least in part. Suitable absorbing material is included in the system of absorption The material that uses in the cover layer of product, transfer layer, the absorbent core and their combination material Material.
In another embodiment of the present invention, side leakage barriers can be by folding or best That the flexible polymer foamed material that is squeezed into the pleating structure of preform consists of. Be suitable for structure Becoming the representative instance of the flexible polymer foam of these pleating structures is polyethylenes. With Before in sanitary napkin, form liquid-tight bottom with polyethylene. Therefore, In a preferred embodiment, can be with the widthwise edge of polyethylene bottom on the sanitary napkin The folding pleating side leakage barriers that repeatedly forms along the sanitary napkin transverse edge of edge.
In an additional embodiment of the present invention, absorbent article comprises the internal layer of absorption pad, On the absorption pad on the relative transverse edge at least each with a C shape folding in order to form along inhaling Receive the additional absorption of goods side and stop thickness, consist of thus additional side leakage protection The source. In addition, or in other words, can be pressed into concave-convex to absorption pad in order to form fine and close The district, this dense area can guide in the absorption pad liquid and from absorption pad, overflowing It is minimum that amount of liquid reduces to. This concavo-convex or dense area also can be an one of C shape folding region Divide
The present invention also provides a kind of absorbent article of sanitary napkin form, and it has above-mentioned side leakage Block piece and the feature with above-mentioned arbitrary alternative embodiment. Sanitary napkin bag of the present invention Draw together the first fold stack structure with vertical shaping, this structure vertically is installed in health adjacently Form first side leakage barriers on first transverse edge of towel and have the of vertical shaping Two-fold structure, this structure vertically are installed on second transverse edge of sanitary napkin adjacently Form second side leakage barriers.
Sanitary napkin of the present invention is preferably made like this, that is, have with the formation of hydrophobic material sheet First side leakage barriers of a plurality of pleat foldings, the bottom of first side leakage barriers adjacently Be installed on first edge of sanitary napkin, form with the hydrophobic material sheet and have a plurality of pleats foldings Second side leakage barriers is installed to sanitary napkin adjacently to the second side leakage barriers bottom Second edge on.
More preferably, the bottom of side leakage barriers is installed to along its longitudinal axis is fixed together on the transverse edge of sanitary towel and the two ends of all foldable layers on the side leakage barriers and is fixed on sanitary towel's goods.Can use above-mentioned any technology and preferably use bonding or the heat seal technology is installed to side leakage barriers in the sanitary towel.Side leakage barriers can also be extended by certain material and be formed, and this material comprises in the sanitary towel material towards health one side, in the sanitary towel towards the material of coat one side, or by towards the material of bodyside and the material that forms towards the material pressing of coat side.
Sanitary towel of the present invention normally vertically is shaped, and it can have the parallel transverse side that is essentially straight, perhaps more preferably has water and leaks shape or dog-bone shape, and at this moment transverse edge is crooked arc.Preferred sanitary towel also forms flank or earflap along its transverse edge, can be with or without on flank or the earflap to be used for earflap being bonded to each other together or earflap being bonded to binding agent on wearer's underwear.
Among Fig. 1-6 the preferred embodiments of the present invention have been shown, wherein have been denoted by like references identical parts in the accompanying drawings.Fig. 1 represents a kind of sanitary towel 10 of having improved the side leakage barrier propterty according to the present invention.Usually the sanitary towel 10 that has elongated shape shown in the figure comprises first transverse edge 14 and second transverse edge 16 and vertically holds 13 and 15.Be installed to first side leakage barriers 18 and first transverse edge, 14 adjacent ground connection in the sanitary towel 10 and second side leakage barriers 20 and second transverse edge, 16 adjacent ground connection are installed in the sanitary towel 10.First earflap 23 can stretch out and second earflap 24 can stretch out from second transverse edge from first transverse edge.Obviously, term " earflap " comprises flank, catch or anyly stretches out from the sanitary towel edge usually and can be used for sanitary towel is fixed to the structure that flexibility on wearer's underwear maybe can be cut with scissors formula as used herein.Should be clear, though be provided with earflap in the preferred embodiments of the present invention, in fact earflap is unimportant for the present invention.
Side leakage barriers 18,20 preferably by monolithic basically hydrophobic material constitute, repeatedly form pleating flange with this monolithic hydrophobic material is folding.In the preferred embodiment, first and second side leakage barriers 18,20 far-end 17,21 separately is fixed on the vertically position of end 15 of close sanitary towel.Similarly, first and second side leakage barriers 18,20 far-end 19,22 separately is fixed on the vertically position of end 13 of close sanitary towel.As shown in Figure 1, the length of side leakage barriers basically with the equal in length of sanitary towel.
Fig. 2 shows another preferred embodiment of the present invention with the form of sanitary towel 30, and the total characteristic of this sanitary towel 30 is identical with sanitary towel 10 shown in Figure 1 with most of concrete feature.Yet in the preferred embodiment, each far-end 31,32 of first and second side leakage barriers 33,34 is fixed on the near point place, that is, inwardly counts, be fixed on about longitudinally 1/3 place of sanitary towel 30 from vertical end 35,36 of sanitary towel 30.Similarly, first and second side leakage barriers 33,34 far-end 37,38 separately is fixed on the near point place, that is, inwardly counts, be fixed on about longitudinally 1/3 place of sanitary towel 30 from vertical end 39,40 of sanitary towel 30.Therefore in Fig. 2, side leakage barriers 33 is positioned at 1/3 place at sanitary towel 30 transverse edges, 14 middle parts, the bottom of side leakage barriers 33 is contained on the medial side 18 along the transverse edge 14 of sanitary towel 30, and with the far-end 31,37 of side leakage barriers 33 near the regional 31a of far-end 31,37,37a internal fixation on a medial side 18.Equally, side leakage barriers 34 is placed 1/3 place at sanitary towel 30 transverse edges, 16 middle parts, the bottom of side leakage barriers 33 is being installed on the medial side 20 near in regional 32a, the 38a of far-end 32,38.In addition, the side leakage barriers among Fig. 2 33,34 is not 1/3 place that must be positioned at sanitary towel 30 transverse edges, 16,18 middle parts.They can be placed and be installed on any position of transverse edge, for example, can be concerning a side leakage barriers and can be concerning another side leakage barriers from far-end 36 to regional 38a from far-end 35 to regional 37a.This layout is particularly suitable for using night, because the position of side leakage barriers is with medial behind when putting on such sanitary towel.
Fig. 3 and Fig. 4 represent to take from line A-A among Fig. 1 or the sanitary towel's profile of the line B-B among Fig. 2.Sanitary towel 40 among Fig. 3 and the sanitary towel 60 among Fig. 4 all have a medial side 41, towards a side 42, mesh covered body 43, liquid-tight barrier sheet 44 and the absorbent cores 45 of coat.By adopting means such as heating, bonding or mechanical bend that barrier sheet 44 is fitted in the mesh covered body state 43 and absorbent cores 45 can be limited between barrier sheet 44 and the mesh covered body 43.In a preferred embodiment, in the process that absorbent cores is sealed between barrier sheet and the mesh covered body, the far-end of side leakage barriers is fitted on the nappe.Absorbent cores can comprise that C shape folded formation or a plurality of C shape folded formation reduce the source so that form additional side leakage.
In addition, can also form the earflap 46 that stretches out from each transverse edge 47, earflap 46 is made of the extension 48 of mesh covered body 43, and extension 48 is fixed on the extension 49 of barrier sheet 44 by binding agent 50.Also binding agent 51,52 impose on earflap 46 stop side and sanitary towel stop side so that sanitary towel is fixed on the clothes, taking off before sheet 53 uses sanitary towels, binding agent is protected always.And, can absorbent cores 45 be fixed on the barrier sheet 44 by binding agent 51a, liquid transfer layer 54 can be placed on the absorbent cores 45 on the medial side, but can be installed to a medial side in the liquid transfer layer 54 on the mesh covered body 43 by the binding agent 55 of sepage.
Usually lower and non-woven fabrics, hydrophobic fiber, crimping fiber, crimped fibre, corrugated fiber, the capillary tube that contains fiber and their mixture that have the transfer layer 54 of higher breathability to comprise to have hydrophobic fiber than the main part of absorbent cores 45 of density, combination by certain agent or agent is chemical adhesive for example, mechanical means such as Needling or ability of swimming tangle, heater such as spunbond, melt and spray, gas blowout, calendering, embossing etc. loosely push fiber each other or are adhered to a certain degree
Mesh covered body 43 can be made of bonded fabric, thin film and their compositions, mesh wherein can be of different sizes and shape, and can be bidimensional or three-dimensional, when in mesh when arriving opposite side on the other side in the face of a side of mesh covered body, three-dimensional mesh be uniformly, taper or become diameter with bending.
The bottom 57 of each in two side leakage barriers 56 shown in Fig. 3 is fixing, have the flanging 58 that bends towards 56 times one decks 59 of side leakage barriers on the bottom 57, flanging 58 inside centers towards sanitary towel 40.
In Fig. 4, the bottom of each in shown two side leakage barriers 61 is fixed, have the flanging 63 that bends towards one deck 64 under the side leakage barriers on the bottom, flanging 63 from the center of sanitary towel 60 to excurvation.
Reduce the principle of side leakage below according to side leakage barriers of the present invention with reference to Fig. 5 and Fig. 6 explanation.As the sanitary towel 70 of the preferred embodiment of the present invention, it bends to concave surface with respect to a medial side 72 in the sanitary towel 70 shown in Fig. 5 presentation graphs 1.Rugosity forms upstanding wall 75 on the medial side 72 in sanitary towel 70 thereby the foldable structure of side leakage barriers 18 and 20 is partly not.Make side leakage barriers be formed up to small part not the mechanism of collapsed shape realize by assemblage characteristic of the present invention.These features comprise the flanging bottom 76,77 are adhered in the sanitary towel in its length range, and all far-ends 17,19,21,22 of side leakage barrier rib are fixed in the sanitary towel, form side leakage barriers 78,79 thus.
Preferably make upstanding wall 74 unrestricted so that form stopping fully basically on the whole length of sanitary towel to liquid along the whole length of sanitary towel.Because upstanding wall forms when curving concave surface in sanitary towel, and thus the folding flange of unfolded accordion shape is formed vertical compression, thus pleating, misalignment or slide not can the appreciable impact side leakage barriers effectiveness.So the side leakage barriers of hydrophobic material be softish and be difficult for getting wet can provide enough comfort levels for the wearer.Do not need with foam class material strengthen or as elastic cushion not the elasticity of demand parts increase ruffle and hold them in erectility.
The sanitary towel 80 that provides in Fig. 6 presentation graphs 2, sanitary towel 80 curves concave surface with respect to its medial side 82.The not pleating foldable structure in side leakage barriers 33,34 tops forms upstanding wall 84,85 on the medial side 82 in sanitary towel 80.Along hemmed length the hemmed bottom 86,87 is adhered in the sanitary towel 80.Far-end 31,32,37,38 integral installations of side leakage barriers 33,34 to sanitary towel 80.Therefore in the sanitary towel of bending, constitute side leakage barriers 88,89 by said structure.
Referring to Fig. 3 and Fig. 4, when being fixed to side leakage barriers in the sanitary towel with bonding agent, for example, when being fixed to foldable structure in the sanitary towel, preferably in Fig. 3 among the length of the bottom 57 or Fig. 4 the length of the bottom 62 apply bonding agent, thereby only be fixed to the bottom in the sanitary towel and make other layer folding to small part.If use the sanitary towel that has earflap, can at random the bottom be adhered on the earflap surface at least in part or all as shown in Figure 3.
The sheet that is used to form side leakage barriers can be selected indiscrete production method, make it to become the extension of mesh covered body 43, the extension of liquid-tight barrier sheet 44, be used to make the extension of the material of earflap 46, or combine by mesh covered body 43 and liquid-tight barrier sheet 44, combine by the material and the liquid-tight barrier sheet 44 that are used to make earflap 46, or combine by one or more above-mentioned materials.
Though abovely the present invention is explained and illustrates, concerning those skilled in the art, under the situation that does not break away from the principle that the invention described above and aftermentioned claim relates to, can make various modifications and variations to the present invention with reference to specific embodiment.For example, foldable structure can comprise folding in any form material piece, and folding mode should be able to make foldable structure open at least in part when absorbing material curves concave surface.In addition, foldable structure is stretched on the whole length of side leakage barriers.Though preferably make side leakage barriers cross over the whole length of sanitary towel, also preferably make for example mid portion of sanitary towel of partial-length that side leakage barriers crosses over sanitary towel simultaneously, the two ends of sanitary towel, or in the sanitary towel near any part of fluid drainage.In addition, can be as shown in FIG. side leakage barriers directly in abutting connection be installed to absorbent article towards on the edge of health one side or be installed to absorbent article leaves the edge slightly on health one side position.
Claims (10)
1, a kind of absorbent article comprises, the intermediate absorption core, towards the liquid-tight layer of coat one side with towards the liquid-permeable layer of health one side, first transverse edge, second transverse edge, first vertically end and second vertically hold, this absorbent article comprises:
First foldable structure, it has longitudinally extending shape and vertically is installed on first transverse edge so that form first side leakage barriers to adjacency; With
Second foldable structure, it has longitudinally extending shape and vertically is installed on second transverse edge so that form second side leakage barriers to adjacency.
2, absorbent article as claimed in claim 1 is characterized in that first and second side leakage barriers have the folding of a plurality of formation ruffles, and when a medial lateral bending becomes concave surface, thereby these foldings can be opened at least in part and form axial wall.
3, absorbent article as claimed in claim 1, it is characterized in that in first and second side leakage barriers each all has first far-end and second far-end, and wherein first and second far-ends of each side leakage barriers are fixed on all on the medial side.
4, absorbent article as claimed in claim 1 is characterized in that the length of each side leakage barriers is substantially equal to the length of absorbent article.
5, absorbent article as claimed in claim 1 is characterized in that the length of each side leakage barriers equals at least 1/3 of absorbent article length.
6, absorbent article as claimed in claim 1, it is characterized in that ruffle be vertically be shaped and have first and second far-ends, at first and second far-ends top layer and the bottom are secured together and are installed to the saturating liquid on health one side layer in the absorbent article.
7, a kind of sanitary towel comprises, the top flat of saturating liquid, and liquid-tight egative film is inserted in the absorbent cores between top flat and the egative film, and first and second transverse edges, but also has:
First foldable structure that vertically is shaped, it is installed so that form first side leakage barriers near first transverse edge;
Second foldable structure that vertically is shaped, it is installed so that form second side leakage barriers near second transverse edge; With
When sanitary towel curved concave surface with respect to the top flat of saturating liquid, first and second side leakage barriers formed axial wall.
8, sanitary towel as claimed in claim 7 is characterized in that the first and second side leakage resistors comprise hydrophobic flakes, has a plurality of foldings that constitute the multilamellar ruffle on the hydrophobic flakes, and these foldings can be opened at least in part to form upstanding wall.
9, sanitary towel as claimed in claim 7, it is characterized in that first and second side leakage barriers be vertically be shaped and have first and second far-ends, each layer of first and second side leakage barriers is fixed together at its far-end separately.
10, sanitary towel as claimed in claim 8 is characterized in that the pleat time-out at least in part between upstanding wall when sanitary towel, and upstanding wall can stop side leakage basically.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41580895A | 1995-04-03 | 1995-04-03 | |
| US415,808 | 1995-04-03 | ||
| US415808 | 1995-04-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1138976A true CN1138976A (en) | 1997-01-01 |
| CN1135102C CN1135102C (en) | 2004-01-21 |
Family
ID=23647282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB961072326A Expired - Fee Related CN1135102C (en) | 1995-04-03 | 1996-04-03 | Multiple folded side barriers for improved leakage protection |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US5752947A (en) |
| EP (1) | EP0740929B1 (en) |
| JP (1) | JPH08336556A (en) |
| CN (1) | CN1135102C (en) |
| AR (1) | AR001558A1 (en) |
| AT (1) | ATE194069T1 (en) |
| AU (1) | AU701286B2 (en) |
| BR (1) | BR9601260A (en) |
| CA (1) | CA2173312C (en) |
| DE (1) | DE69609010T2 (en) |
| ES (1) | ES2149399T3 (en) |
| GR (1) | GR3034451T3 (en) |
| HU (1) | HUP9600865A2 (en) |
| MY (1) | MY113492A (en) |
| NZ (1) | NZ286311A (en) |
| PL (1) | PL313609A1 (en) |
| PT (1) | PT740929E (en) |
| TW (1) | TW410601U (en) |
| UY (1) | UY24200A1 (en) |
| ZA (1) | ZA962632B (en) |
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| CN102271636A (en) * | 2009-01-07 | 2011-12-07 | 尤妮佳股份有限公司 | Absorbent article |
| CN106963561A (en) * | 2015-12-31 | 2017-07-21 | 世纪圈（马）有限公司 | The urine pants water accepting layer protected with triple-leakproof |
| CN109771145A (en) * | 2018-12-17 | 2019-05-21 | 贵州卡布婴童用品有限责任公司 | A kind of collapsible urine pants and its manufacturing method |
| CN113939259A (en) * | 2019-06-03 | 2022-01-14 | 宝洁公司 | Disposable absorbent article |
| CN114340575A (en) * | 2019-09-19 | 2022-04-12 | 大王制纸株式会社 | Absorbent article |
| CN115337147A (en) * | 2022-06-30 | 2022-11-15 | 江苏锦琪昶新材料有限公司 | Absorbent product with leak-proof separation edge |
Also Published As
| Publication number | Publication date |
|---|---|
| AU701286B2 (en) | 1999-01-21 |
| EP0740929A3 (en) | 1997-02-26 |
| CA2173312A1 (en) | 1996-10-04 |
| MY113492A (en) | 2002-03-30 |
| CA2173312C (en) | 2007-01-16 |
| PT740929E (en) | 2000-10-31 |
| EP0740929A2 (en) | 1996-11-06 |
| ATE194069T1 (en) | 2000-07-15 |
| DE69609010D1 (en) | 2000-08-03 |
| UY24200A1 (en) | 1996-06-14 |
| NZ286311A (en) | 1997-11-24 |
| HU9600865D0 (en) | 1996-05-28 |
| AR001558A1 (en) | 1997-11-26 |
| ES2149399T3 (en) | 2000-11-01 |
| TW410601U (en) | 2000-11-01 |
| CN1135102C (en) | 2004-01-21 |
| JPH08336556A (en) | 1996-12-24 |
| PL313609A1 (en) | 1996-10-14 |
| EP0740929B1 (en) | 2000-06-28 |
| DE69609010T2 (en) | 2001-05-31 |
| AU5044296A (en) | 1996-10-17 |
| GR3034451T3 (en) | 2000-12-29 |
| US5752947A (en) | 1998-05-19 |
| BR9601260A (en) | 1998-01-06 |
| ZA962632B (en) | 1997-10-02 |
| HUP9600865A2 (en) | 1996-10-28 |
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